package com.wangtao.netty.groupchat;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;

import java.util.Scanner;

public class GroupChatClient {

    private final String HOST;
    private final int PORT;

    public GroupChatClient(String HOST, int PORT) {
        this.HOST = HOST;
        this.PORT = PORT;
    }

    public void run() {
        EventLoopGroup loopGroup = new NioEventLoopGroup();
        try {
            Bootstrap bootstrap = new Bootstrap();

            bootstrap.group(loopGroup).channel(NioSocketChannel.class)
                    .handler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            ChannelPipeline pipeline = ch.pipeline();
                            pipeline.addLast("decoder", new StringDecoder());
                            pipeline.addLast("encoder", new StringEncoder());
                            pipeline.addLast(new GroupChatClientHandler());
                        }
                    });

            ChannelFuture future = bootstrap.connect(HOST, PORT).sync();
            Channel channel = future.channel();
            System.out.println("------" + channel.localAddress() + "-------");

            Scanner scanner = new Scanner(System.in);
            while (scanner.hasNextLine()) {
                String msg = scanner.nextLine();
                channel.writeAndFlush(msg + "\r\n");
            }
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            loopGroup.shutdownGracefully();
        }
    }

    public static void main(String[] args) {
        new GroupChatClient("127.0.0.1", 7000).run();
    }
}
